CN102035309B - Method and apparatus for generating power in a wind turbine - Google Patents
Method and apparatus for generating power in a wind turbine Download PDFInfo
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- CN102035309B CN102035309B CN201010512939.8A CN201010512939A CN102035309B CN 102035309 B CN102035309 B CN 102035309B CN 201010512939 A CN201010512939 A CN 201010512939A CN 102035309 B CN102035309 B CN 102035309B
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D9/00—Adaptations of wind motors for special use; Combinations of wind motors with apparatus driven thereby; Wind motors specially adapted for installation in particular locations
- F03D9/20—Wind motors characterised by the driven apparatus
- F03D9/25—Wind motors characterised by the driven apparatus the apparatus being an electrical generator
- F03D9/255—Wind motors characterised by the driven apparatus the apparatus being an electrical generator connected to electrical distribution networks; Arrangements therefor
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D7/00—Controlling wind motors
- F03D7/02—Controlling wind motors the wind motors having rotation axis substantially parallel to the air flow entering the rotor
- F03D7/0272—Controlling wind motors the wind motors having rotation axis substantially parallel to the air flow entering the rotor by measures acting on the electrical generator
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K17/00—Asynchronous induction motors; Asynchronous induction generators
- H02K17/42—Asynchronous induction generators
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/04—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors
- H02K3/28—Layout of windings or of connections between windings
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P25/00—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details
- H02P25/16—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details characterised by the circuit arrangement or by the kind of wiring
- H02P25/18—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details characterised by the circuit arrangement or by the kind of wiring with arrangements for switching the windings, e.g. with mechanical switches or relays
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K17/00—Asynchronous induction motors; Asynchronous induction generators
- H02K17/02—Asynchronous induction motors
- H02K17/12—Asynchronous induction motors for multi-phase current
- H02K17/14—Asynchronous induction motors for multi-phase current having windings arranged for permitting pole-changing
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2213/00—Specific aspects, not otherwise provided for and not covered by codes H02K2201/00 - H02K2211/00
- H02K2213/09—Machines characterised by the presence of elements which are subject to variation, e.g. adjustable bearings, reconfigurable windings, variable pitch ventilators
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/18—Structural association of electric generators with mechanical driving motors, e.g. with turbines
- H02K7/1807—Rotary generators
- H02K7/1823—Rotary generators structurally associated with turbines or similar engines
- H02K7/183—Rotary generators structurally associated with turbines or similar engines wherein the turbine is a wind turbine
- H02K7/1838—Generators mounted in a nacelle or similar structure of a horizontal axis wind turbine
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P2101/00—Special adaptation of control arrangements for generators
- H02P2101/15—Special adaptation of control arrangements for generators for wind-driven turbines
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P2207/00—Indexing scheme relating to controlling arrangements characterised by the type of motor
- H02P2207/07—Doubly fed machines receiving two supplies both on the stator only wherein the power supply is fed to different sets of stator windings or to rotor and stator windings
- H02P2207/073—Doubly fed machines receiving two supplies both on the stator only wherein the power supply is fed to different sets of stator windings or to rotor and stator windings wherein only one converter is used, the other windings being supplied without converter, e.g. doubly-fed induction machines
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P25/00—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details
- H02P25/16—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details characterised by the circuit arrangement or by the kind of wiring
- H02P25/18—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details characterised by the circuit arrangement or by the kind of wiring with arrangements for switching the windings, e.g. with mechanical switches or relays
- H02P25/20—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details characterised by the circuit arrangement or by the kind of wiring with arrangements for switching the windings, e.g. with mechanical switches or relays for pole-changing
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P9/00—Arrangements for controlling electric generators for the purpose of obtaining a desired output
- H02P9/007—Control circuits for doubly fed generators
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Control Of Eletrric Generators (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
A generator (118) for use in a wind turbine (10) is provided. The generator includes a rotor (106) including a plurality of rotor windings, the rotor configured to be electrically coupled to a wind turbine electrical distribution system, a stator (120) including a plurality of stator windings (302,402), the stator configured to be magnetically coupled to the rotor, and electrically coupled to the wind turbine electrical distribution system, and a terminal box (336) coupled to the stator, the terminal box configured to switch the stator between a first number of magnetic poles (312) and a second number of magnetic poles (314).
Description
Technical field
The application relates generally to wind turbine, and relates more specifically to for produce the method and apparatus of power at wind turbine.
Background technology
Conventionally, wind turbine comprises the turbine with rotor, and this rotor comprises the rotatable propeller hub assembly with a plurality of blades.Blade is transformed into mechanical rotating torques by wind energy, and this torque drives one or more generators via rotor.Generator sometimes but not always by gear box, be connected on rotor rotatably.Gear box progressively improves the intrinsic low rotary speed of rotor, so that generator converts rotating mechanical energy to electric energy efficiently, this electric energy is fed in utility network via at least one electrical connector.Also there is the direct drive wind turbine of gearless.Rotor, generator, gear box and other member are arranged in housing or cabin conventionally, and this housing or cabin are positioned on the base top that can be truss pylon or tubulose pylon.
Some wind turbine structures comprise double fed induction generators (DFIG).This class formation also can comprise power converter, and this power converter is for becoming frequency to be roughly similar to the frequency of utility network the frequency inverted of produced electrical power.In addition, this type of converter incorporates DFIG is transmission electric power between utility network and generator also together, and generator excitation power is transferred to Wound-rotor type generator amature from one of them of connector to utility network connector.As alternative, some wind turbine structures include but not limited to induction generator, permanent magnetism (PM) synchronous generator of alternative types, electric excitation synchronous generator and switch reluctance generator.These constructive alternative also can comprise power converter, this power converter for as described above like that inversion frequency and between utility network and generator transmission electric power.
Some known wind turbines use DFIG to produce power by wind speed, and this wind speed is around the rated wind speed fluctuation of wind turbine.This type of DFIG makes wind turbine in the scope above and below wind turbine rated wind speed about 30%, operate efficiently conventionally.In order to trap energy the wind speed from relative broad range, at least some known wind turbines comprise two independent generators, and they have respectively different service speeds.Yet, use two independent generators can cause extra cost and can improve the cost that produces power.
Summary of the invention
In one embodiment, provide a kind of generator using in wind turbine, it comprises the rotor with a plurality of rotor windings, and this rotor configuration becomes to be electrically coupled in the distribution system of wind turbine.Generator also comprises the stator with a plurality of stator winding.Stator structure becomes magnetic to be connected on rotor, and is electrically coupled in the distribution system of wind turbine.Stator is also configured in order to switch between the magnetic pole at the first number and the magnetic pole of the second number.
In another embodiment, provide a kind of wind turbine.This wind turbine comprises wind turbine distribution system and generator.Generator comprises the rotor with a plurality of rotor windings, and this rotor configuration becomes in order to be electrically coupled in wind turbine distribution system.Generator also comprises the stator with a plurality of stator winding, and this stator structure becomes to be connected on rotor in order to magnetic.Stator structure becomes in order to be electrically coupled in the distribution system of wind turbine, and switches between the magnetic pole of the first number and the magnetic pole of the second number.
In another embodiment, provide a kind of for produce the method for power at wind turbine.The method is included in wind turbine distribution system is provided in wind turbine, and generator is connected in wind turbine distribution system.Generator comprises the rotor with a plurality of rotor windings, and the stator with a plurality of stator winding.The method also comprises stator magnet is connected on rotor, and is in order to switch between the magnetic pole at the first number and the magnetic pole of the second number by stator structure.
Accompanying drawing explanation
Fig. 1 is the perspective view of a part for exemplary wind turbine.
Fig. 2 is can be in conjunction with the exemplary electrical of the wind turbine use shown in Fig. 1 and the sketch of control system.
Fig. 3 is the sketch of the exemplary stator winding assembly that can use in conjunction with electric and control system shown in Fig. 2.
Fig. 4 is the sketch of a part for the exemplary stator winding assembly shown in Fig. 3.
Fig. 5 is the sketch of the constructive alternative of the stator winding assembly that can use in conjunction with electric and control system shown in Fig. 2.
Fig. 6 is the sketch of a part for the alternative stator winding assembly structure shown in Fig. 5.
Fig. 7 illustrates for the stator winding assembly shown in Fig. 3 being switched to the more chart of the illustrative methods of the magnetic pole of more number.
Fig. 8 illustrates for stator winding assembly being switched to the flow chart of illustrative methods of the magnetic pole of the more more number shown in Fig. 7.
Fig. 9 illustrates for the alternative stator winding assembly shown in Fig. 5 being switched to the chart of illustrative methods of the magnetic pole of decreased number.
Figure 10 illustrates for stator winding assembly being switched to the flow chart of illustrative methods of the magnetic pole of the decreased number shown in Fig. 9.
Parts List
100 wind turbines
102 cabins
104 pylons
106 rotors
108 blades
110 propeller hubs
112 slow-speed shafts
114 gear boxes
116 high speed shafts
118 generators
120 generator unit stators
122 generator amatures
200 electric and control system
202 turbine controllers
206 stator synchro switches
208 stator buses
210 power transfer assemblies
212 rotor buses
214 main transformer circuit-breakers
216 system busbars
218 rotor filters
219 rotor filter buses
220 rotor-side power converters
222 power converters
223 line-side power transducer buses
224 line filters
225 circuit buses
226 line contactors
228 change-over circuit circuit breakers
230 change-over circuit circuit breaker buses
232 connection buss
234 main transformers
236 generator side bus
238 electrical network circuit-breakers
240 circuit breaker side bus
242 electrical network buses
244DC link
246 positive main lines (rail)
248 negative main lines
250 capacitors
252 first groups of transducers
254 second groups of transducers
256 the 3rd groups of transducers
262 converter controllers
264 current sensors
266 slip rings
268 variable resistances
300 stator winding assemblies
302 stator winding
304 first-phases
306 second-phases
308 third phases
More than 310 magnetic pole
312 first utmost points
314 second utmost points
316 the 3rd utmost points
318 the 4th utmost points
320 the first terminals
322 second terminals
The first terminal of 324 first-phases
The second terminal of 326 first-phases
328 the first terminals
330 second terminals
332 the first terminals
334 second terminals
336 terminal boxs
338 utmost point a-b boxs
More than 346 terminal
348 a-b box the first terminals
350 a-b box the second terminals
352 first stator winding
354 second stator winding
356 the 3rd stator winding
400 stator winding assemblies
402 stator winding
404 first-phases
406 second-phases
408 third phases
410 magnetic poles
412 first utmost points
414 second utmost points
416 the 3rd utmost points
418 the 4th utmost points
420 the 5th utmost points
422 sextupoles
424 the first terminals
426 second terminals
The first terminal of 428 first-phases
The second terminal of 430 first-phases
432 the first terminals
434 second terminals
436 the first terminals
438 second terminals
440 terminal boxs
442 utmost point a-b boxs
More than 450 terminal
452 a-b box the first terminals
454 a-b box the second terminals
456 first stator winding
458 second stator winding
500 methods
The state of the 502 less utmost points
504 increase the propeller pitch angle of blade
The propeller pitch angle of 506 stabilizer vanes
508 disconnect generator and electrical network bus
510 increase the propeller pitch angle of blade
512 fade to the more utmost point of number by generator
514 remain on roughly propeller pitch angle uniformly by blade
516 are connected to generator on electrical network bus
518 reduce the propeller pitch angle of blade
The propeller pitch angle of 520 stabilizer vanes
522 recovery operations
600 methods
602 more multipole states
604 increase the propeller pitch angle of blade
The propeller pitch angle of 606 stabilizer vanes
608 disconnect generator and electrical network bus
610 reduce the propeller pitch angle of blade
612 fade to the utmost point of decreased number by generator
614 remain on roughly propeller pitch angle uniformly by blade
616 are connected to generator on electrical network bus
618 reduce the propeller pitch angle of blade
The propeller pitch angle of 620 stabilizer vanes
622 recovery operations
Embodiment
Fig. 1 is the perspective view of a part for exemplary wind turbine 100.Wind turbine 100 comprises the cabin 102 of accommodating generator (not shown in figure 1).Cabin 102 is arranged on pylon 104 (a part of pylon 104 has been shown in Fig. 1).Pylon 104 can be and contributes to make wind turbine 100 such any height operating as described herein.Wind turbine 100 also comprises rotor 106, and this rotor 106 comprises three blades 108 that are attached on rotation propeller hub 110.As alternative, wind turbine 100 comprises the blade 108 that contributes to make wind turbine 100 such arbitrary number operating as described herein.In the exemplary embodiment, wind turbine 100 comprises the gear box (not shown in figure 1) being rotatably connected in rotor 106 and generator (not shown in figure 1).
Fig. 2 is can be in conjunction with the exemplary electrical of wind turbine 100 uses and the sketch of control system 200.Rotor blade 106 comprises the blade 108 being connected on rotation propeller hub 110.Rotor 106 also comprises the slow-speed shaft 112 being rotatably connected on propeller hub 110.Slow-speed shaft 112 is connected on the gear box 114 progressively accelerating, and this gear box 114 is configured to progressively increase the rotary speed of slow-speed shaft 112, and this speed is passed to high speed shaft 116.In the exemplary embodiment, gear box 114 has the progressively speed-up ratio (step-up ratio) of about 70: 1.For example, be connected to the speed of the slow-speed shaft 112 generation about 1400rpm for altitude axis 116 with about 20 revs/min (rpm) rotation on the gear box 114 that progressively speed-up ratio is about 70: 1.As alternative, gear box 114 has and contributes to make wind turbine 100 such any progressively speed-up ratio operating as described herein.As another alternative, wind turbine 100 comprises the generator of direct driving, and this generator is rotatably connected on rotor 106 and without any intervenient gear box.
Electric and control system 200 comprises turbine controller 202.Turbine controller 202 comprises at least one processor and memory, at least one processor input channel, at least one processor output channel, and can comprise at least one computer (all not shown in Fig. 2).As used herein, term " computer " is not limited only to be called in the art those integrated circuits of computer, but broadly refer to processor, microcontroller, microcomputer, programmable logic controller (PLC), application-specific integrated circuit (ASIC) and other programmable circuit (all not shown in Fig. 2), and these terms are used interchangeably in this article.In the exemplary embodiment, memory can include but not limited to computer-readable medium, as random access memory (RAM) (all not shown in Fig. 2).As alternative, also can use one or more storage devices, as floppy disk, compact disk read-only memory (CD-ROM), magneto optical disk (MOD) and/or digital versatile disc (DVD) (all not shown in Fig. 2).In addition, in the exemplary embodiment, additional input channel (not shown in Fig. 2) can be but is not limited to the computer peripheral associated with operating personnel's interface phase, as mouse and keyboard (both are all not shown in Figure 2).In addition, in the exemplary embodiment, additional output channel can include but not limited to operating personnel's interface monitor (not shown in Fig. 2).
For the processor of turbine controller 202, process the information of coming from a plurality of electric and electronic device transmission, these devices can include but not limited to voltage and current converter.RAM and/or memory device stores and transmission are by the information of being carried out by processor and instruction.RAM and/or storage device are also used between processor execution order period and store and provide temporary variable, static (that is, constant) information and instruction or other average information to processor.Performed instruction includes but not limited to resident transfer algorithm and/or comparator algorithm.The execution of command sequence is not limited to any particular combination of hardware circuit and software instruction.
Generator unit stator 120 is electrically coupled on stator synchro switch 206 via stator bus 208.In the exemplary embodiment, in order to contribute to DFIG structure, generator amature 122 is electrically coupled on bidirectional power transition components 210 via rotor bus 212.As shown in Figure 2, generator amature 122 is electrically coupled on rotor bus 212 via at least one slip ring 266, and slip ring 266 can be connected at least one variable resistance 268, for adjust generator amature 122 slip (or slippage, slip).For example, variable resistor 268 can adopt the mode of electricity or machinery to change, and makes turbine controller 202 and/or user can adjust as required the resistance of variable resistance 268, in order to adjust the slip amount (or slippage) of generator 118.As alternative, generator amature 122 is electricly electrically coupled on rotor bus 212 with control system 200 such any other device operating as described herein via contributing to make.As another alternative, electric and control system 200 is configured to total power converting system (not shown) well known in the art, wherein, the total power transition components (not shown in Fig. 2) that design and operating aspect are similar to power transfer assembly 210 is electrically coupled on generator unit stator 120, and this kind of total power transition components contributes to guide electrical power between generator unit stator 120 and electric power transmission and minute power distribution network (not shown).In the exemplary embodiment, stator bus 208 transfers to stator synchro switch 206 by three phase power from generator unit stator 120.Rotor bus 212 transfers to power transfer assembly 210 by three phase power from generator amature 122.In the exemplary embodiment, stator synchro switch 206 is electrically coupled on main transformer circuit-breaker 214 via system busbar 216.In alternative, one or more fuse member (not shown) are used for replacing main transformer circuit-breaker 214.In another embodiment, neither use fuse member, also do not use main transformer circuit-breaker 214, but stator synchro switch 206 is connected on generator side bus 236 via system busbar 216.
In the exemplary embodiment, line-side power transducer 222 is electrically coupled on line filter 224 via line-side power transducer bus 223.In addition, line filter 224 is electrically coupled on line contactor 226 via circuit bus 225.In addition, line contactor 226 is electrically coupled on change-over circuit circuit breaker 228 via change-over circuit circuit breaker bus 230.In addition, change-over circuit circuit breaker 228 is electrically coupled on main transformer circuit-breaker 214, one or more fuse member or generator side bus 236 via system busbar 216 and connection bus 232.As alternative; line filter 224 is electrically coupled on system busbar 216 via connection bus 232; wherein, any protection scheme (not shown) is all configured in order to solve, line contactor 226 and change-over circuit circuit breaker 228 be removed with control system 200 from electric.Main transformer circuit-breaker 214 is electrically coupled on electrical power main transformer 234 via generator side bus 236.Main transformer 234 is electrically coupled on electrical network circuit-breaker 238 via circuit breaker side bus 240.Electrical network circuit-breaker 238 is connected on electric power transmission and minute power distribution network via electrical network bus 242.In alternative, main transformer 234 is electrically coupled on one or more fuse member (not shown) via circuit breaker side bus 240, but not on electrical network circuit-breaker 238.In another embodiment, neither use fuse member, also do not use electrical network circuit-breaker 238, but main transformer 234 is connected on electric power transmission and minute power distribution network via circuit breaker side bus 240 and electrical network bus 242.
In the exemplary embodiment, rotor-side power converter 220 and line-side power transducer 222 are connected into electric connection each other via single direct current (DC) link 244.As alternative, rotor-side converter 220 electrically connects via independent and separated DC link (not shown in Fig. 2) with line side transducer 222.DC link 244 comprises positive main line (rail) 246, negative main line 248, and is connected at least one capacitor 250 therebetween.As alternative, capacitor 250 is for being configured to the one or more capacitors of serial or parallel connection between positive main line 246 and negative main line 248.
As shown in Figure 2, electric and control system 200 also comprises converter controller 262, this converter controller 262 is configured in order to receive a plurality of voltage and current measuring-signals from second group of voltage and current transducer 254 (it is connected into stator bus 208 and carries out Electronic data communication), from the 3rd group of current sensor 256 (it is connected into rotor bus 212 and carries out Electronic data communication), receive the 3rd group of current measurement signal, and receive the 4th group of current measurement signal from the 4th group of current sensor 264 (it is connected into change-over circuit circuit breaker bus 230 and carries out Electronic data communication).Second group of transducer 254 is roughly similar to first group of transducer 252, and the 4th group of transducer 264 is roughly similar to the 3rd group of transducer 256.Converter controller 262 is roughly similar to turbine controller 202, and is connected into wind turbine controller 202 and carries out Electronic data communication.In addition, in the exemplary embodiment, converter controller 262 is physically integrated in power transfer assembly 210.As alternative, converter controller 262 has and contributes to make electric and control system 200 such any structure operating as described herein.
During operation, wind impacts blade 108, and blade 108 is transformed into mechanical rotating torques by wind energy, and this torque rotatably drives slow-speed shaft 112 via propeller hub 110.Slow-speed shaft 112 driving gearboxs 114, and gear box 114 progressively improves the low rotary speed of axle 112 subsequently, to drive high speed shaft 116 with the rotary speed increasing.High speed shaft 116 rotatably drives generator amature 122.Rotating magnetic field is brought out by generator amature 122, and is connected to the interior induced potential of generator unit stator 120 on generator amature 122 at magnetic.Generator 118 converts the mechanical energy of rotation to sinusoidal three-phase alternating current (AC) electric power signal in generator unit stator 120.Relevant electrical power transfers to main transformer 234 via stator bus 208, stator synchro switch 206, system busbar 216, main transformer circuit-breaker 214 and generator side bus 236.Main transformer 234 progressively improves the voltage amplitude of electrical power, and the electrical power changing further transfers to electrical network via circuit breaker side bus 240, electrical network circuit-breaker 238 and electrical network bus 242.
In the exemplary embodiment, provide the second electric power transmission path.Three phase sine AC electrical power is in the interior generation of generator amature 122, and transfers to power transfer assembly 210 via rotor bus 212.In power transfer assembly 210, electric power transmission is to rotor filter 218, wherein, and for the rate of change of the pwm signal being associated with rotor-side power converter 220 and change electrical power.Rotor-side power converter 220 is used as rectifier, and is DC power by sinusoidal three-phase AC power rectification.DC power delivery is in DC link 244.Capacitor 250 alleviates by promotion the voltage amplitude variation that the DC ripple being associated with AC rectification contributes to reduce DC link 244.
DC power transfers to line-side power transducer 222 from DC link 244 subsequently, wherein, transducer 222 is as inverter, and this inverter is configured to have predetermined voltage in order to the DC electrical power that comes from DC link 244 is converted to, the three phase sine AC electrical power of electric current and frequency.This conversion is monitored and is controlled via converter controller 262.The AC power of changing transfers to system busbar 216 via line-side power transducer bus 223 and circuit bus 225, line contactor 226, change-over circuit circuit breaker bus 230, change-over circuit circuit breaker 228 and connection bus 232 from line-side power transducer 222.Harmonic current the electrical power that line filter 224 compensation or adjustment come from 222 transmission of line-side power transducer.Stator synchro switch 206 was configured in order to the closed so that three phase power that promotes to come from generator unit stator 120 and being connected of three phase power that comes from power transfer assembly 210.
Circuit-breaker 228,214 and 238 is configured to for example excessive in current flow and disconnect corresponding bus may destroy the member of electric and control system 200 time.Additional protection member is also provided, has comprised line contactor 226, they can be controlled to form disconnection by the switch (not shown in Fig. 2) of opening corresponding to each circuit in circuit bus 225.
For example,, due to the wind speed variation at propeller hub 110 and blade 108 places, therefore power transfer assembly 210 can compensate or adjust the frequency of the three phase power that comes from generator amature 122.Therefore, in this way, machinery and electric rotor frequency and stator frequency decoupling.
In some cases, the binary feature of the binary feature of power transfer assembly 210 and specifically rotor-side power converter 220 and line-side power transducer 222, contributes at least some in produced electrical power to be fed to and to get back in generator amature 122.More specifically, electrical power transfers to connection bus 232 from system busbar 216, and via change-over circuit circuit breaker 228 and change-over circuit circuit breaker bus 230, is transferred in power transfer assembly 210 subsequently.In power transfer assembly 210, electrical power is transferred in line-side power transducer 222 via line contactor 226, circuit bus 225 and line-side power transducer bus 223.Line-side power transducer 222 is used as rectifier, and sinusoidal three-phase AC power rectification is become to DC power.DC power delivery is in DC link 244.Capacitor 250 alleviates by promotion the voltage amplitude variation that often relevant to three-phase AC rectification DC ripple reduces DC link 244.
DC power transfers to rotor-side power converter 220 from DC link 244 subsequently, wherein, transducer 220 is as inverter, and this inverter is configured to have predetermined voltage in order to transmission is converted to from the DC of DC link 244 electrical power, the three phase sine AC electrical power of electric current and frequency.This conversion is monitored and is controlled via converter controller 262.The AC power of changing transfers to rotor filter 218 via rotor filter bus 219 from rotor-side power converter 220, and via rotor bus 212, transfers to generator amature 122 subsequently, thereby contributes to subsynchronous operation.
Fig. 3 is can be in conjunction with sketch electric and the exemplary stator winding assembly 300 that control system 200 (shown in Fig. 2) is used.Although Fig. 3 shows the stator winding assembly 300 in the exemplary embodiment with 36 stator winding 302 that are arranged as 4 utmost points structures, stator winding assembly 300 comprises and is arranged as the stator winding 302 with the arbitrary number that makes the utmost point that electric and control system 200 can such arbitrary number operating as described herein.Stator winding 302 consists of conductive of material, as steel, copper or other material well known in the art.
Fig. 4 shows the sketch of a part for stator winding assembly 300 (shown in Fig. 3).Each stator winding 302 includes winding the first terminal 320 and winding the second terminal 322.In the exemplary embodiment, the winding the first terminal 320 of each stator winding 302 and winding the second terminal 322 are all configured to be connected on stator winding terminal box 336 and/or utmost point a-b box 338.In the exemplary embodiment, terminal box 336 is configured in order to winding the first terminal 320 and/or winding the second terminal 322 are linked together, and/or is connected on the winding the first terminal 320 and/or winding the second terminal 322 of one or more adjacent stators windings 302.Utmost point a-b box 338 comprises and is configured to be connected to the winding the first terminal 320 of one or more stator winding 302 and/or a plurality of terminals 346 on winding the second terminal 322.Utmost point a-b box terminal 346 is configured to be connected on first-phase 304, second-phase 306 and/or the third phase 308 of stator bus 208 (shown in Fig. 2).First-phase 304 comprises the first terminal 324 and the second terminal 326, and second-phase 306 comprises the first terminal 328 and the second terminal 330, and third phase 308 comprises the first terminal 332 and the second terminal 334.
In the exemplary embodiment, terminal box 336 and/or utmost point a-b box 338 are by operatively (or the ground that works) control of turbine controller 202 (shown in Fig. 2).As described in more complete herein, turbine controller 202 is selected a plurality of magnetic poles 310 (shown in Fig. 3), utilizes these magnetic poles 310 operation stator winding assemblies 300.In the exemplary embodiment, terminal box 336 is linked together one or more adjacent stator winding 302 via winding the first terminal 320 and winding second terminal 322 of each stator winding 302.In an embodiment (shown in Fig. 4), as herein more intactly as described in, terminal box 336 is linked together three stator winding 302 via winding the first terminal 320 and winding the second terminal 322, to contribute to form 4 utmost point stator winding assemblies 300.In alternative, terminal box 336 is linked together the adjacent stators winding 302 of different numbers via winding the first terminal 320 and winding the second terminal 322, to contribute to form the stator winding assembly 300 of the utmost point with 4 utmost points or different numbers.
In the exemplary embodiment, in order to form 4 utmost point structures of stator winding assembly 300, utmost point a-b box 338 is connected to the first terminal of utmost point a-b box 348 on the first terminal 320 of the first stator winding 352.Terminal box 336 is connected to the second terminal 322 of the first stator winding 352 on the first terminal 320 of the second stator winding 354.Terminal box 336 is connected to the second terminal 322 of the second stator winding 354 on the first terminal 320 of the 3rd stator winding 356.Therefore, terminal box 336 is connected to the first stator winding 352 on the second stator winding 354, and the second stator winding 354 is connected on the 3rd stator winding 356.Utmost point a-b box 338 is connected to the second terminal 350 of utmost point a-b box on the second terminal 322 of the 3rd stator winding 356.Utmost point a-b box 338 is also connected to the first terminal of utmost point a-b box 348 on the first terminal 324 of first-phase, and the second terminal 350 of utmost point a-b box is connected on the second terminal 326 of first-phase.Therefore, in the exemplary embodiment, terminal box 336 and the utmost point switch phase 338 three stator winding 302 are connected on the first-phase 304 of stator bus 208.In alternative, terminal box 336 and utmost point a-b box 338 are connected to the stator winding of arbitrary number 302 on the first-phase 304 of stator bus 208.
In the exemplary embodiment, as shown in Figure 4, terminal phase 336 and utmost point a-b box 338 are connected to three adjacent stator winding 302 on the first terminal 328 and the second terminal 330 of second-phase to be similar to the mode of first-phase 304.Terminal box 336 and utmost point a-b box 338 are connected to three adjacent stator winding 302 on the first terminal 332 and the second terminal 334 of third phase in a similar manner.In addition, for all stator winding 302 in stator winding assembly 300, can repeat above coupling configuration.Therefore, in the exemplary embodiment, terminal box 336 and utmost point a-b box 338 are connected to 1/3rd stator winding 302 on first- phase 304,1/3rd stator winding 302 is connected on second- phase 306, and 1/3rd stator winding 302 is connected on third phase 308.
Fig. 5 is the sketch of the constructive alternative of the stator winding assembly 400 that can use in conjunction with electric and control system 200 (shown in Fig. 2).Although Fig. 5 shows the stator winding assembly 400 in the exemplary embodiment with 36 stator winding 402 that are arranged as 6 utmost points structures, stator winding assembly 400 comprises and is arranged as the stator winding 402 with the arbitrary number that makes the utmost point that electric and control system 200 can such arbitrary number operating as described herein.Stator winding 402 consists of conductive of material, as steel, copper or other material well known in the art.
Fig. 6 shows the sketch of a part for stator winding assembly 400 (shown in Fig. 5).Each stator winding 402 includes winding the first terminal 424 and winding the second terminal 426.In the exemplary embodiment, the winding the first terminal 424 of each stator winding 402 and winding the second terminal 426 are all configured to be connected on stator winding terminal box 440 and/or utmost point a-b box 442.In the exemplary embodiment, terminal box 440 is configured in order to winding the first terminal 424 and/or winding the second terminal 426 are linked together, and/or is connected on the winding the first terminal 424 and/or winding the second terminal 426 of one or more adjacent stators windings 402.Utmost point a-b box 442 comprises and is configured to be connected to the winding the first terminal 424 of one or more stator winding 402 and/or a plurality of terminals 450 on winding the second terminal 426.Utmost point a-b box terminal 450 is configured to be connected on first-phase 404, second-phase 406 and/or the third phase 408 of stator bus 208 (shown in Fig. 2).First-phase 404 comprises the first terminal 428 and the second terminal 430, and second-phase 406 comprises the first terminal 432 and the second terminal 434, and third phase 408 comprises the first terminal 436 and the second terminal 438.
In the exemplary embodiment, terminal box 440 and/or utmost point a-b box 442 are by operatively (or the ground that works) control of turbine controller 202 (shown in Fig. 2).As described in more complete herein, turbine controller 202 is selected a plurality of magnetic poles 410 (shown in Fig. 5), utilizes these magnetic poles 410 operation stator winding assemblies 400.In the exemplary embodiment, terminal box 440 is linked together one or more adjacent stator winding 402 via winding the first terminal 424 and winding second terminal 426 of each adjacent stators winding 402.In an embodiment (shown in Fig. 6), as described in more complete herein, terminal box 440 is linked together two stator winding 402 via winding the first terminal 424 and winding the second terminal 426, to contribute to form 6 utmost point stator winding assemblies 400.In alternative, terminal box 440 is linked together the adjacent stators winding 402 of different numbers via winding the first terminal 424 and winding the second terminal 426, to contribute to form the stator winding assembly 400 of the utmost point with 6 utmost points or different numbers.
In the exemplary embodiment, in order to form 6 utmost point structures of stator winding assembly 300, utmost point a-b box 442 is connected to the first terminal of utmost point a-b box 452 on the first terminal 424 of the first stator winding 456.Terminal box 440 is connected to the second terminal 426 of the first stator winding 456 on the first terminal 424 of the second stator winding 458.Therefore, terminal box 400 is connected to the first stator winding 456 on the second stator winding 458.Utmost point a-b box 442 is connected to the second terminal 454 of utmost point a-b box on the second terminal 426 of the second stator winding 458.Utmost point a-b box 442 is also connected to the first terminal of utmost point a-b box 452 on the first terminal 428 of first-phase, and the second terminal 454 of utmost point a-b box is connected on the second terminal 430 of first-phase.Therefore, in the exemplary embodiment, terminal box 440 and the utmost point switch phase 442 two stator winding 402 are connected on the first-phase 404 of stator bus 208.In alternative, terminal box 440 and utmost point a-b box 442 are connected to the stator winding of arbitrary number 402 on the first-phase 404 of stator bus 208.
In the exemplary embodiment, as shown in Figure 6, terminal box 400 and utmost point a-b box 442 are connected to two adjacent stator winding 402 on the first terminal 432 and the second terminal 434 of second-phase to be similar to the mode of first-phase 404.Terminal box 440 and utmost point a-b box 442 are connected to two adjacent stator winding 402 on the first terminal 436 and the second terminal 438 of third phase in a similar manner.In addition, for all stator winding 402 in stator winding assembly 400, can repeat above coupling configuration.Therefore, in the exemplary embodiment, terminal box 440 and utmost point a-b box 442 are connected to 1/3rd stator winding 402 on first- phase 404,1/3rd stator winding 402 is connected on second- phase 406, and 1/3rd stator winding 402 is connected on third phase 408.
In the exemplary embodiment, turbine controller 202 is configured in order to switch between the stator winding assembly 300 (shown in Fig. 3) at 4 utmost point structures and the stator winding assembly 400 (shown in Fig. 5) of 6 utmost points structure.In alternative, turbine controller 202 is configured in order to switch between the stator winding assembly structure of magnetic pole with any number.
Fig. 7 is for illustrating for by generator unit stator 120 (shown in Fig. 2) and be more specifically that stator winding assembly 300 (shown in Fig. 3) switches to the more chart of the illustrative methods 500 of the magnetic pole 410 (shown in Fig. 5) of more number.In the exemplary embodiment, turbine controller 202 (shown in Fig. 2) can using method 500 switch to generator unit stator 120 stator winding assembly 400 (shown in Fig. 5) of 6 utmost point structures from the stator winding assembly 300 of 4 utmost point structures.
In the exemplary embodiment, wind turbine 100 (shown in Fig. 1) is in 502 times operations of state of the less utmost point.At state 504, turbine controller 202 increases to the propeller pitch angle of blade 108 (shown in Fig. 1) higher than meticulous pitch control level.The torque of generator 118 (shown in Fig. 2) is decreased to and is approximately 0, and as known in the art, this has increased the rotary speed of generator amature 122 (shown in Fig. 2).At state 506, the propeller pitch angle of turbine controller 202 stabilizer vanes 108, and wind turbine 100 reaches roughly the state of " idle running ".At state 508, turbine controller 202 is opened stator synchro switch 206, and generator 118 roughly disconnects with electrical network bus (shown in Fig. 2).At state 510, turbine controller 202 increases the propeller pitch angle of blade 108, and the rotary speed of blade 108 reduces.At state 512, turbine controller 202 fades to the more utmost point of more number by generator 118.In the exemplary embodiment, as above, described in Fig. 5, turbine controller 202 fades to 6 utmost point structures by generator 118.In alternative, turbine controller 202 fades to generator 118 the more multipole structure of the utmost point with different numbers.At state 514, turbine controller 202 remains on roughly propeller pitch angle uniformly by blade 108, and the rotation of blade 108 remains on constant or synchronous speed.At state 516, the closed stator synchro switch 206 of turbine controller 202, and generator 118 is connected on electrical network bus 242.At state 518, turbine controller 202 reduces the propeller pitch angle of blade 108, and this causes blade 108 rotary speeies to increase.At state 520, turbine controller 202 continues to be decreased to meticulous pitch control level by the propeller pitch angle of blade 108.The rotary speed of generator 118 is roughly stabilized in speed lower than the rotary speed of the operation of the magnetic pole 310 (shown in Fig. 3) with lesser number of generator 118, and torque increases to nominal from being approximately 0.At state 522, wind turbine 100 recovery operations, and generator 118 is with more multipole constructor.
Fig. 8 is for illustrating for by generator unit stator 120 (shown in Fig. 2) and be more specifically that stator winding assembly 300 (shown in Fig. 3) switches to the more flow chart of the illustrative methods 500 of the magnetic pole 410 (shown in Fig. 5) of more number.
Further referring to Fig. 8, in the exemplary embodiment, turbine controller 202 increases 504 to higher than meticulous pitch control level by the propeller pitch angle of blade 108 (shown in Fig. 1).The torque of generator 118 (shown in Fig. 2) is decreased to and is approximately 0, and as known in the art, this has increased the rotary speed of generator amature 122 (shown in Fig. 2).Turbine controller 202 is stablized the propeller pitch angle of 506 blades 108, and wind turbine 100 (shown in Fig. 1) reaches roughly the state of " idle running ".In addition, the rotary speed of the torque of generator 118 and generator amature 122 is roughly stable.Turbine controller 202 makes generator 118 and electrical network bus 242 (shown in Fig. 2) disconnect 508 by opening stator synchro switch 206 (shown in Fig. 2).Turbine controller 202 increases the propeller pitch angle of 510 blades 108, and the rotary speed of blade 108 reduces.As described in above with reference to Fig. 5, turbine controller 202 fades to 512 utmost points of more number more by generator 118, as 6 utmost points.As alternative, turbine controller 202 fades to the 512 more multipole structures with the utmost point of different numbers by generator 118.When generator 118 fades to 512 more during the utmost point of more number, the rotary speed of generator amature 122 reduces.The torque of generator 118 keeps being approximately 0, and generator 118 keeps disconnecting with electrical network bus 242 simultaneously.Turbine controller 202 keeps 514 for uniform propeller pitch angle roughly by the propeller pitch angle of blade 108.The rotary speed of the rotation of blade 108 and generator amature 122 remains on constant or synchronous speed.Turbine controller 202 connects 516 by closed stator synchro switch 206 to electrical network bus 242 again by generator 118.Turbine controller 202 reduces the propeller pitch angle of 518 blades 108, and this causes blade 108 rotary speeies to increase.The torque of the rotary speed of generator amature 122 and generator 118 also increases.Turbine controller 202 continues to reduce the propeller pitch angle of blade 108, and propeller pitch angle is stablized to 520 in meticulous pitch control level.The rotary speed of generator 118 is roughly stabilized in speed lower than the rotary speed of the operation of the utmost point with lesser number of generator 118, and the torque of generator 118 increases to nominal from being approximately 0.Wind turbine 100 recovers 522 operations, and generator 118 is with more multipole constructor.
Fig. 9 is for illustrating for by generator unit stator 120 (shown in Fig. 2) and be more specifically the chart that stator winding assembly 400 (shown in Fig. 5) switches to the illustrative methods 600 of fewer object magnetic pole 410 (shown in Fig. 5).In the exemplary embodiment, turbine controller 202 (shown in Fig. 2) can using method 600 switch to generator unit stator 120 stator winding assembly 300 (shown in Fig. 3) of 4 utmost point structures from the stator winding assembly 400 of 6 utmost point structures.
In the exemplary embodiment, wind turbine 100 (shown in Fig. 1) is in 602 times operations of more multipole state.At state 604, turbine controller 202 increases to the propeller pitch angle of blade 108 (shown in Fig. 1) higher than meticulous pitch control level.The torque of generator 118 (shown in Fig. 2) is decreased to and is approximately 0, and the rotary speed of generator amature 122 (shown in Fig. 2) reduces.At state 606, the propeller pitch angle of turbine controller 202 stabilizer vanes 108, and wind turbine 100 reaches roughly the state of " idle running ".At state 608, turbine controller 202 is opened stator synchro switch 206, and generator 118 roughly disconnects with electrical network bus 242 (shown in Fig. 2).At state 610, turbine controller 202 reduces the propeller pitch angle of blade 108, and the rotary speed of blade 108 increases.At state 612, turbine controller 202 fades to generator 118 magnetic pole 310 (shown in Fig. 3) of lesser number.In the exemplary embodiment, as above, described in Fig. 3, turbine controller 202 fades to 4 utmost point structures by generator 118.In alternative, turbine controller 202 fades to generator 118 structure of the still less utmost point of the utmost point with different numbers.At state 614, turbine controller 202 remains on roughly propeller pitch angle uniformly by blade 108, and the rotation of blade 108 remains on constant or synchronous speed.At state 616, the closed stator synchro switch 206 of turbine controller 202, and generator 118 is connected on electrical network bus 242.At state 618, turbine controller 202 reduces the propeller pitch angle of blade 108.When generator 118 is connected on electrical network bus 242, due to the utmost point operation with lesser number, therefore the torque increase of the generator 118 and rotary speed of blade 108 reduces.At state 620, turbine controller 202 remains on meticulous pitch control level by the propeller pitch angle of blade 108.The rotary speed of generator 118 is roughly stabilized in speed higher than the rotary speed of the operation of the utmost point with more number more of generator 118, and torque increases to nominal.At state 622, wind turbine 100 recovery operations, and generator 118 is with the constructor of the utmost point still less.
Figure 10 is for illustrating for by generator unit stator 120 (shown in Fig. 2) and be more specifically the flow chart of the illustrative methods 600 of stator winding assembly 400 (shown in Fig. 5) magnetic pole 310 (shown in Fig. 3) that switches to lesser number.
Further referring to Figure 10, in the exemplary embodiment, turbine controller 202 increases 604 to higher than meticulous pitch control level by the propeller pitch angle of blade 108 (shown in Fig. 1).The torque of generator 118 (shown in Fig. 2) is decreased to and is approximately 0, and the rotary speed of generator amature 122 (shown in Fig. 2) reduces.Turbine controller 202 is stablized the propeller pitch angle of 606 blades 108, and the state that wind turbine 100 reaches roughly " idle running ".In addition, the rotary speed of the torque of generator 118 and generator amature 118 is roughly stable.Turbine controller 202 makes generator 118 and electrical network bus 242 (shown in Fig. 2) disconnect 608 by opening stator synchro switch 206 (shown in Fig. 2).Turbine controller 202 reduces the propeller pitch angle of 610 blades 108, and the rotary speed of blade 108 increases.As described in above with reference to Fig. 3, turbine controller 202 fades to generator 118 utmost point of 612 lesser number, as 4 utmost points.As alternative, turbine controller 202 fades to 612 structures of the still less utmost point with the utmost point of different numbers by generator 118.When generator 118 fades to the utmost point of 612 lesser number, the rotary speed of generator amature 122 increases.It is about 0 that the torque of generator 118 remains, and generator 118 keeps disconnecting with electrical network bus 242 simultaneously.Turbine controller 202 keeps 614 for uniform propeller pitch angle roughly by the propeller pitch angle of blade 108.The rotary speed of the rotation of blade 108 and generator amature 122 remains on constant or synchronous speed.Turbine controller 202 connects 616 by closed stator synchro switch 206 to electrical network bus 242 again by generator 118.Turbine controller 202 reduces the propeller pitch angle of 618 blades 108.Due to the utmost point operation of generator 118 with lesser number, therefore the torque increase of the generator 118 and rotary speed of blade 118 and the rotary speed of generator amature 122 reduce.Turbine controller 202 is roughly stablized 620 levels at meticulous pitch control by the propeller pitch angle of blade 108.The rotary speed of generator 118 is roughly stabilized in speed higher than the rotary speed of the operation of the utmost point with more number more of generator 118, and the torque of generator 118 increases to nominal.Wind turbine 100 recovers 622 operations, and generator 118 is with the constructor of the utmost point still less.
As shown in Fig. 7, Fig. 8, Fig. 9 and Figure 10, using method 500 and 600 contributes to the rotary speed that provides different, generator 118 with these different rotary speeies at the utmost point of lesser number and more switch between the utmost point of more number.More specifically, before generator 118 switches to the utmost point of more number more at the utmost point from lesser number, with the operation of the first rotary speed or velocity interval, and after switching to the utmost point of more number more, with the second rotary speed lower than the first rotary speed or velocity interval operation.On the contrary, generator 118 is from before more the utmost point of more number switches to the utmost point of lesser number, with the second rotary speed or velocity interval operation, and after switching to the utmost point of decreased number, with the first rotary speed or velocity interval operation.Will be appreciated that, due to the operation of slow-speed shaft 112, gear box 114 and high speed shaft 116, the rotary speed of the rotary speed of blade 108 and generator 118 is proportional.
The operation of using method 500 and 600 wind turbine 100 and comprise that the generator 118 of stator winding assembly 300 and 400 contributes to provide more efficient wind turbine 100 operations.As known in the art, use double fed induction generators to make the wind turbine can be to operate above and below about 30% of rated wind speed.Analogue data shows, by method 500 and 600 in conjunction with the generator 118 that comprises stator winding assembly 300 and 400 use contribute to wind turbine 100 than rated wind speed low about 50% to the operation between high 30% than rated wind speed.In addition, in conjunction with generator 118, use stator winding assembly 300 and 400 to contribute to reduce to flow through the magnitude of current of power transfer assembly 210 (shown in Fig. 2).Therefore, the size of power transfer assembly 210 can reduce, to cost savings and efficiency are further provided.In addition, analogue data shows, method 500 and 600 is used and contributed to make the year energy yield (AEP) of wind turbine 100 to improve between about 1.5% to about 2.2% in conjunction with generator 118.
Above-described embodiment contributes to provide the efficient and worthwhile generator of cost benefit with multipole structure.Generator as herein described and method contribute to provide for wind turbine the operation wind speed range of increase.Therefore, generator as herein described and method contribute to make wind turbine can from wind, trap more power, and operation more efficiently in wider wind speed range.In addition, generator as herein described and method contribute to reduce size and/or the cost of the power conversion system that can use in conjunction with generator.
Described the exemplary embodiment of the method for wind turbine generator and operation wind turbine generator above in detail.The method and generator are not limited to specific embodiment as herein described, and contrary, the member of generator and/or the step of method can be used with other member as herein described and/or step independently and dividually.For example, generator and method also can be used in conjunction with other wind turbine power system and method, and are only not limited to implement in conjunction with power system as described herein.Definite, exemplary embodiment can be applied and carried out and use in conjunction with many other wind turbines or power system.
Although some there is shown and the specific features of other not shown various embodiment of the present invention, this is only for convenient.According to principle of the present invention, any feature in a width accompanying drawing can give in conjunction with any feature in any other accompanying drawing reference and/or advocate right.
This written explanation has used the example that comprises optimal mode to disclose the present invention, and also enables those skilled in the art to implement the present invention, comprises the method for making and using any device or system and carry out the combination of any institute.The patentable scope of the present invention is defined by the claims, and can comprise other example that those skilled in the art conceives.If it is not different structural detail that these other examples have from the written language of claim, or if these other examples comprise and the written language of the claim equivalent constructions element without essence difference, within thinking that these examples are in the scope of claim.
Claims (20)
1. the generator using in wind turbine, described generator comprises:
The rotor that comprises a plurality of rotor windings, described rotor configuration becomes in order to be electrically coupled in wind turbine distribution system;
The stator that comprises a plurality of stator winding, described stator structure becomes to be connected on described rotor in order to magnetic, and is electrically coupled in described wind turbine distribution system; And
Be connected to the terminal box on described stator, described terminal box is configured to use so that described stator switches between the magnetic pole of the first number and the magnetic pole of the second number.
2. generator according to claim 1, is characterized in that, described rotor is connected in described wind turbine distribution system by least one slip ring.
3. generator according to claim 2, is characterized in that, described at least one slip ring is connected on variable resistance, in order to change the slip amount of described generator.
4. generator according to claim 2, is characterized in that, described at least one slip ring is connected on power converter.
5. generator according to claim 1, is characterized in that, described terminal box is configured in order at least one pair of the adjacent stators winding in described a plurality of stator winding is linked together.
6. generator according to claim 1, is characterized in that, described generator comprises utmost point a-b box, and described utmost point a-b box is configured in order at least one stator winding in described a plurality of stator winding is connected in described wind turbine distribution system.
7. generator according to claim 1, it is characterized in that, described stator structure becomes in order at least two stator winding in described a plurality of stator winding are linked together, and described stator is also configured to the number of the described a plurality of stator winding in order to be linked together by change and switches between the magnetic pole of described the first number and the magnetic pole of described the second number.
8. generator according to claim 1, is characterized in that, described generator is connected on controller, described controller be configured in order to:
Described generator and described wind turbine distribution system are disconnected;
Described generator is switched to the magnetic pole of described the second number from the magnetic pole of described the first number; And,
Described generator is connected in described wind turbine distribution system.
9. a wind turbine, comprising:
Wind turbine distribution system; And
Generator, it comprises:
The rotor that comprises a plurality of rotor windings, described rotor configuration becomes in order to be electrically coupled in described wind turbine distribution system;
The stator that comprises a plurality of stator winding, described stator structure becomes to be connected on described rotor in order to magnetic, and is electrically coupled in described wind turbine distribution system; And
Be connected to the terminal box on described stator, described terminal box is configured to use so that described stator switches between the magnetic pole of the first number and the magnetic pole of the second number.
10. wind turbine according to claim 9, is characterized in that, described rotor is connected in described wind turbine distribution system by least one slip ring.
11. wind turbines according to claim 10, is characterized in that, described at least one slip ring is connected on variable resistance, in order to change the slip amount of described generator.
12. wind turbines according to claim 10, is characterized in that, described at least one slip ring is connected on power converter.
13. wind turbines according to claim 9, is characterized in that, described terminal box is configured in order at least one pair of the adjacent stators winding in described a plurality of stator winding is linked together.
14. wind turbines according to claim 9, is characterized in that, described generator comprises utmost point a-b box, and described utmost point a-b box is configured in order at least one stator winding in described a plurality of stator winding is connected in described wind turbine distribution system.
15. wind turbines according to claim 9, it is characterized in that, described stator structure becomes in order at least two stator winding in described a plurality of stator winding are linked together, and described stator is also configured to the number of the described a plurality of stator winding in order to be linked together by change and switches between the magnetic pole of described the first number and the magnetic pole of described the second number.
16. wind turbines according to claim 9, is characterized in that, described generator is connected on controller, described controller be configured in order to:
Described generator and described wind turbine distribution system are disconnected;
Described generator is switched to the magnetic pole of described the second number from the magnetic pole of described the first number; And,
Described generator is connected in described wind turbine distribution system.
17. 1 kinds for producing the method for power at wind turbine, described method comprises:
Wind turbine distribution system is provided in described wind turbine;
Generator is connected in described wind turbine distribution system, and described generator comprises the rotor with a plurality of rotor windings and the stator with a plurality of stator winding;
Described stator magnet is connected on described rotor;
Terminal box is connected on described stator; And
Described terminal box is configured to use so that described stator switches between the magnetic pole of the first number of First Speed scope manipulate and the magnetic pole of the second number of second speed scope manipulate.
18. methods according to claim 17, is characterized in that, described method also comprises:
Described generator and described wind turbine distribution system are disconnected;
Described generator is switched to the magnetic pole of described the second number from the magnetic pole of described the first number; And,
Described generator is connected in described wind turbine distribution system.
19. methods according to claim 17, is characterized in that, described method also comprises described terminal box is connected at least one pair of the adjacent stators winding in described a plurality of stator winding.
20. methods according to claim 17, is characterized in that, described method also comprises utmost point a-b box is connected between at least one stator winding and described wind turbine distribution system in described a plurality of stator winding.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US12/570,490 | 2009-09-30 | ||
| US12/570,490 US7843078B2 (en) | 2009-09-30 | 2009-09-30 | Method and apparatus for generating power in a wind turbine |
| US12/570490 | 2009-09-30 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102035309A CN102035309A (en) | 2011-04-27 |
| CN102035309B true CN102035309B (en) | 2014-01-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010512939.8A Expired - Fee Related CN102035309B (en) | 2009-09-30 | 2010-09-29 | Method and apparatus for generating power in a wind turbine |
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| Country | Link |
|---|---|
| US (1) | US7843078B2 (en) |
| EP (1) | EP2306625A3 (en) |
| CN (1) | CN102035309B (en) |
Families Citing this family (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ES2946678T3 (en) * | 2010-02-25 | 2023-07-24 | Vestas Wind Sys As | Wind turbine controller applying a differential pole control algorithm |
| JP5287824B2 (en) * | 2010-10-20 | 2013-09-11 | 株式会社デンソー | motor |
| DE102011015970B4 (en) * | 2011-04-04 | 2014-05-22 | Phoenix Contact Gmbh & Co. Kg | Wind turbine with a data transmission system |
| ITMI20111180A1 (en) * | 2011-06-28 | 2012-12-29 | Wilic Sarl | WIND POWER PLANT FOR THE GENERATION OF ELECTRICITY |
| US8426995B2 (en) * | 2011-11-02 | 2013-04-23 | General Electric Company | Wind turbine generator and wind turbine |
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Also Published As
| Publication number | Publication date |
|---|---|
| EP2306625A2 (en) | 2011-04-06 |
| US20100133826A1 (en) | 2010-06-03 |
| CN102035309A (en) | 2011-04-27 |
| EP2306625A3 (en) | 2018-01-24 |
| US7843078B2 (en) | 2010-11-30 |
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